How many helices are present in crambin?
a. 1
b. 2
c. 3
d. 4
b
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If all of the collagen were removed from a bone, how would the properties of that bone be altered?
A. The bone would be more brittle and easier to break. B. The bone would be more flexible. C. The bone would be harder to break. D. The bone would be more flexible and harder to break. E. The bone would be indistinguishable from cartilage.
Sidearms are attached to ________.
A) B tubules B) A tubules C) central pairs D) radial spokes E) interdoublet nexin
A scientific name consists of which of the following?
I. family name II. genus name III. species name a. I only b. II only c. III only d. I and II e. II and III
The concentration of calcium in a cell is 0.3%. The concentration of calcium in the surrounding fluid is 0.1%. How could the cell obtain more calcium?
A. passive transport B. diffusion C. osmosis D. active transport